.480

From Halopedia, the Halo wiki

Template:FOF-1 Template:Ratings

.450 is the cartridge that was chambered for an interchangeable barrel for the SRS 99C - S2 AM Sniper Rifle that Linda used on her first mission to capture Colonel Robert Watts, which was a success.[1]

Trivia

  • .480 means that this ammo type is twelve twenty-fifths of an inch wide.
  • This ammo size is about 12.192mm.